You may want to also consider where you get the energy to heat your water. One option is using gas to heat your hot water, which is often cheaper than oil and electricity. If you are looking to make your home more environmentally friendly you may even want to consider solar panels as they will provide you with electricity with only a one off initial cost, which will then give you free electricity for years to come.

Use less hot water.

Use an insulated hot water cylinder.

Use cheaper fuels, such as gas.

Control when water is heated.

In the majority of the homes in the UK water is heated by the home's central heating system. The hot water is either heated from your combi boiler when needed or if you have a regular boiler it will heat water for a hot water cylinder which you can then use. Although most central heating systems have an immersion it is best only to use when other alternatives are not an option, which is due to the fact immersions can be much more costly for your heating bill.